Technipion contribution to bto sγ
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hep-ph
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gammatechnipionassumingchargedconstraintscontributioncouplingdecay
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We show that the present limit on the inclusive decay $b\rightarrow s\gamma$ provides strong constraints on Technicolor models. In particular, small values of $F_\pi$ and the mass of charged octet and singlet technipions are excluded, assuming the most natural form of the technipion coupling to the ordinary quarks.
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